Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

Databases Reporting with SQL Aggregate and Numeric Functions Counting Groups

Jason Kirkpatrick
Jason Kirkpatrick
2,117 Points

Can't seem to get this, though I think I'm counting the numbers of books in each genre instead of each genre. How?

SELECT DISTINCT COUNT(genre) as total_genres FROM books GROUP BY genre;

1 Answer

Steven Parker
Steven Parker
217,570 Points

In task 2, it's the genres you want to be unique, not the count itself. Also, you won't need to use grouping for this one.